Overhead projection system



FIG. 1 is a perspective view of an overhead projection system showing the new design for a overhead projection system. As shown, the overhead projection system is oriented upright;

FIG. 2 is a side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The portions of the article in broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a overhead projection system, as shown and described. 